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Title: Role of microstructures on the M1-M2 phase transition in epitaxial VO2 thin films

Journal Article · · Scientific Reports
DOI:https://doi.org/10.1038/srep04854· OSTI ID:1624709
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  1. Univ. of Electronic Science and Technology of China, Chengdu (China). State Key Lab. of Electronic Thin films and Integrated Devices
  2. Chinese Academy of Sciences (CAS), Beijing (China). The Inst. of Physics
  3. Univ. of Texas at San Antonio, TX (United States). Dept. of Physics and Astronomy
  4. Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Center for Integrated nanotechnologies

Vanadium dioxide (VO2) with its unique sharp resistivity change at the metal-insulator transition (MIT) has been extensively considered for the near-future terahertz/infrared devices and energy harvesting systems. Controlling the epitaxial quality and microstructures of vanadium dioxide thin films and understanding the metal-insulator transition behaviors are therefore critical to novel device development. The metal-insulator transition behaviors of the epitaxial vanadium dioxide thin films deposited on Al2O3 (0001) substrates were systematically studied by characterizing the temperature dependency of both Raman spectrum and Fourier transform infrared spectroscopy. Our findings on the correlation between the nucleation dynamics of intermediate monoclinic (M2) phase with microstructures will open a new avenue for the design and integration of advanced heterostructures with controllable multifunctionalities for sensing and imaging system applications.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC52-06NA25396
OSTI ID:
1624709
Journal Information:
Scientific Reports, Vol. 4, Issue 1; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

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Interplay Between Extra Charge Injection and Lattice Evolution in VO 2 /CH 3 NH 3 PbI 3 Heterostructure journal January 2018
Tuning critical phase transition in VO 2 via interfacial control of normal and shear strain journal November 2019
Phase transition induced micromechanical actuation in VO 2 coated cantilever journal August 2018
Stability of the M2 phase of vanadium dioxide induced by coherent epitaxial strain journal August 2016
Thickness effects on the epitaxial strain states and phase transformations in (001)-VO 2 /TiO 2 thin films journal February 2019
Insulator-metal transitions in the T phase Cr-doped and M 1 phase undoped VO 2 thin films journal August 2018
Competing phases in epitaxial vanadium dioxide at nanoscale journal August 2019
Prediction of low energy phase transition in metal doped MoTe 2 from first principle calculations journal May 2019
Porous silicon-VO 2 based hybrids as possible optical temperature sensor: Wavelength-dependent optical switching from visible to near-infrared range journal October 2015
Direct evidence for the coexistence of nanoscale high-conduction and low-conduction phases in VO 2 films journal October 2018
Investigating Metal–Insulator Transition and Structural Phase Transformation in the (010)-VO2/(001)-YSZ Epitaxial Thin Films journal September 2018
Ultrafast response flexible breath sensor based on vanadium dioxide journal August 2017
Persistent M2 phase in strongly strained (011)-oriented grains in VO 2 films grown on sapphire (001) in reactive sputtering journal April 2019
Role of V-V dimerization in the insulator-metal transition and optical transmittance of pure and doped VO 2 thin films journal January 2020
Selected-Area Chemical Nanoengineering of Vanadium Dioxide Nanostructures Through Nonlithographic Direct Writing journal September 2018
Synthesis, properties, and applications of large-scale two-dimensional materials by polymer-assisted deposition journal June 2019
Prediction of low energy phase transition in metal doped MoTe$_2$ from first principle calculations text January 2018
Competing Phases in Epitaxial Vanadium Dioxide at Nanoscale preprint January 2019
Photoinduced Strain Release and Phase Transition Dynamics of Solid-Supported Ultrathin Vanadium Dioxide journal August 2017
Solution-Processed VO2-SiO2 Composite Films with Simultaneously Enhanced Luminous Transmittance, Solar Modulation Ability and Anti-Oxidation property journal November 2014
Surface step terrace tuned microstructures and dielectric properties of highly epitaxial CaCu3Ti4O12 thin films on vicinal LaAlO3 substrates journal October 2016